{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["machanical property", "process characterization", "enabling technology", "engineering feature", "process parameter", "biomedical"], "input": "Both Hewlett Packard and Xerox ‘ are investing in 3D printing research and technology development ."}
{"machanical property": [], "process characterization": [], "enabling technology": [], "engineering feature": [], "process parameter": [], "biomedical": []}